CN201170052Y

CN201170052Y - Roll screen engaging and disengaging gear

Info

Publication number: CN201170052Y
Application number: CNU2007201826616U
Authority: CN
Inventors: 卢伟
Original assignee: SHENZHEN GOALWAY TECHNOLOGY Co Ltd
Current assignee: SHENZHEN GOALWAY TECHNOLOGY Co Ltd
Priority date: 2007-10-18
Filing date: 2007-10-18
Publication date: 2008-12-24
Anticipated expiration: 2017-10-18

Abstract

The utility model relates to a roller blind engaging and disengaging gear, comprising a turbine, a drive motor and a gear, wherein the drive turbine drives the turbine to rotate, and a rotating shaft for lifting the roller blind is inserted in the gear. The number of the gear teeth is greater than that of the turbine teeth. The turbine is meshed with the gear. When the drive motor is rotated, the gear is driven by the turbine to be rotated, and the rotating shaft is driven by the gear to be rotated, thereby lifting the roller blind. With an additional gear the teeth number of which is more than that of the turbine, the gear is driven by the turbine and the rotating shaft is driven to move. The torsion of the roller blind engaging and disengaging gear is improved, and thus the efficiency of the roller blind engaging and disengaging gear is improved, and the service life is prolonged. The engaging and disengaging gear is combined with an actuating device so that the roller blind engaging and disengaging gear is ingenious in structure and facilitates use better. By adjusting the ratio of the gear to the turbine, the input of different moments can be achieved to meet the requirements of different occasions.

Description

A kind of roller shutter arrangement of clutch

Technical field

The utility model relates to a kind of arrangement of clutch, refers in particular to the arrangement of clutch that is used for roller shutter.

Background technology

Traditional roller shutter arrangement of clutch drives turbine rotation by CD-ROM drive motor, and it is that rotating shaft is rotated that turbine drives worm screw, and the rotation of rotating shaft is risen roller shutter or descended.This drive unit is with low cost, and is simple in structure, but its defective is that output torque is little, and efficient is low, and application life while is shorter, can't directly realize clutch function.

The utility model content

In view of this, the purpose of this utility model is to address the above problem, and a kind of roller shutter arrangement of clutch is provided, and strengthens the output dynamics, and can realize clutch function.

The technical solution of the utility model is:

A kind of roller shutter arrangement of clutch, it is characterized in that: comprise that a turbine, one drive the CD-ROM drive motor of turbine rotation and one and be inserted with a gear that is used to make the turning cylinder of roller shutter lifting on it, the gear number of teeth is greater than the turbine number of teeth, turbine and gears engaged, thus when CD-ROM drive motor rotates, gear rotation by the turbine band, and the gear driven turning cylinder rotates, thereby makes the roller shutter lifting.

The hole is established at described power transmission shaft top, and bearing pin is in the hole, and bearing pin and turning cylinder are perpendicular; The face that gear contacts with bearing pin is established inside groove, and inside groove size and bearing pin are measure-alike; Turning cylinder is with clutch bearing and flexible member successively at the following position of bearing pin, and the turning cylinder bottom is unsettled.

The cross section of described clutch bearing is " several " font, and the facade of clutch bearing is up-narrow and down-wide.

Described clutch bearing is provided with handle, and the handle root is established the hole, and lock stay cord and release stay cord are bundled in the hole.

Described flexible member is a spring.

The beneficial effects of the utility model are: by increasing the gear of a number of teeth greater than turbine, this gear is driven by turbine, and drives the power transmission shaft motion, has increased the torque of roller shutter arrangement of clutch, thereby has improved the efficient of roller shutter arrangement of clutch, has prolonged the life-span.The utility model combines arrangement of clutch and drive unit, makes roller shutter arrangement of clutch structure more exquisite, is more convenient for using.The utility model can be realized the input of different moments by adjusting the ratio number of gear 4 and turbine 1, satisfies the demand of different occasions.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the exploded view of arrangement of clutch of the present utility model;

Fig. 3 is the section of structure of arrangement of clutch closure state of the present utility model;

Fig. 4 is the section of structure of arrangement of clutch off-state of the present utility model.

Among the figure, 1: turbine; 2: CD-ROM drive motor; 3: turning cylinder; 4: gear; 5: bearing pin; 6: the clutch bearing; 7: flexible member.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is further described.

Please refer to Fig. 1, and further describe gear transmission structure of the present utility model.CD-ROM drive motor 2, turbine 1, gear 4 interlocks.The number of teeth of gear 4 is greater than the number of teeth of turbine 1.When CD-ROM drive motor 2 rotates, drive turbine 1 and rotate, turbine 1 driven gear 4 rotates.Gear 4 drives turning cylinder 3, and turning cylinder 3 drives roller shutter and rises or descend.

According to mechanics principle, during from the pinion transferring power to gear wheel, because the circumference ratio of gear is exactly a radius ratio, ratio and moment of torsion amplification multiple that the speed of rotation reduces, all equal the number of teeth ratio of two gears just, this ratio is exactly so-called " gear ratio ".For example, drive gear wheel with pinion, the number of teeth of supposing pinion is 15 teeth, and the number of teeth of gear wheel is 45 teeth.When pinion with the rotation of the rotating speed of 3000rpm, and moment of torsion is when being 20kg-m, the rotating speed that is passed to gear wheel has just reduced by 1/3, becomes 1000rpm; But moment of torsion amplifies three times on the contrary, becomes 60kg-m.

Because in the utility model, the roller shutter arrangement of clutch has increased a travelling gear, therefore amplified output torque, improve efficient, and increased the life-span of roller shutter arrangement of clutch.

Please refer to Fig. 2, and further describe arrangement of clutch of the present utility model.The hole is established at turning cylinder 3 tops, and bearing pin 5 is in the hole, and bearing pin 5 is perpendicular with turning cylinder 3.Gear 4 is established inside groove with the face that bearing pin 5 contacts, and inside groove size and bearing pin 5 are measure-alike, and bearing pin 5 can withstand in the inside groove, makes bearing pin 5 withstand on gear 4 inside.When bearing pin 5 withstood on gear 5 inside, the rotation of gear 5 drove power transmission shaft 3 and rotates; When bearing pin 5 broke away from gear, gear 4 can't drive power transmission shaft 3 and rotate.Turning cylinder 3 is with clutch bearing 6 and spring 7 successively at bearing pin 5 following positions, and turning cylinder 3 bottoms are unsettled.When bearing pin 5 withstands on gear 4 when inner, spring 7 in the raw, when bearing pin 5 breaks away from gears 4, spring 7 compressions.The cross section of clutch bearing 6 is " several " font, and the facade of clutch bearing 6 is up-narrow and down-wide.Clutch bearing 6 is provided with handle, and the handle root is established the hole, and lock stay cord and release stay cord are bundled in the hole.

When the user needs the hand-operated lifting roller shutter, perhaps ought run into special circumstances such as power failure, when the CD-ROM drive motor 2 in the roller shutter arrangement of clutch quits work, the user spurs the release stay cord downwards, clutch bearing 6 stressed moving downward, clutch bearing 6 moves downward the downward pressure and the up-narrow and down-wide structure of clutch bearing 6 facades of generation, makes spring 7 compressions.After spring 7 compressions, turning cylinder 3 falls naturally, and bearing pin 5 is followed turning cylinder 3 and fallen, and leaves inside groove, breaks away from gear 4.After bearing pin 5 broke away from gear 4, even CD-ROM drive motor 2 works on, turbine 1 continued driven gear 4 and rotates, and turning cylinder 3 can not driven by gear 4 yet, and CD-ROM drive motor 2 can't drive turning cylinder 3 and rotate, and therefore can't drive the roller shutter lifting.The user has realized the hand-operated lifting roller shutter.

When the user need recover the electric up-down roller shutter, the user upwards spurred the stay cord of locking, and clutch bearing 6 is risen by pulling force, and spring 7 recovers natures, and the restoring force of spring 7 rises turning cylinder 3, and bearing pin 5 is followed turning cylinder 3 risings and withstood in the inside groove.After bearing pin 5 withstands on gear 4 inside, CD-ROM drive motor 2 work, turbine 1 driven gear 4 rotates, and turning cylinder 3 is driven by gear 4, and roller shutter is realized motorized motions.

Fig. 3 and Fig. 4 are respectively the section of structures of arrangement of clutch closure state of the present utility model and off-state.When arrangement of clutch was closed, bearing pin 5 withstood on gear 4 inside, and power transmission shaft 3 rises.When arrangement of clutch disconnected, bearing pin 5 and power transmission shaft 3 all descended.

The utility model can be realized the input of different moments by adjusting the ratio number of gear 4 and turbine 1, satisfies the demand of different occasions.

The support of arrangement of clutch is by the metalwork die cast, and with the erection column die casting of gear 4 fixed heads together, not only save cost, and improve assembly precision.

Claims

1, a kind of roller shutter arrangement of clutch, it is characterized in that: comprise the CD-ROM drive motor (2) that a turbine (1), a driving turbine (1) rotate, an and gear (4), be inserted with a turning cylinder (3) that is used to make the roller shutter lifting on the described gear (4), gear (4) number of teeth is greater than turbine (1) number of teeth, turbine (1) and gear (4) engagement, thus when CD-ROM drive motor (2) rotates, gear (4) is rotatedly connected with turbine (1), gear (4) is rotatedly connected with turning cylinder (3), and roller shutter and turning cylinder (3) are rotatedly connected.

2, roller shutter arrangement of clutch according to claim 1 is characterized in that: the hole is established at described power transmission shaft (3) top, and bearing pin (5) is in the hole, and bearing pin (5) is perpendicular with turning cylinder (3); Gear (4) is established inside groove with the face that bearing pin (5) contacts, and inside groove size and bearing pin (5) are measure-alike; Turning cylinder (3) is with clutch bearing (6) and flexible member (7) successively at the following position of bearing pin (5), and turning cylinder (3) bottom is unsettled.

3, roller shutter arrangement of clutch according to claim 2 is characterized in that: the cross section of described clutch bearing (6) is " several " font, and the facade of clutch bearing (6) is up-narrow and down-wide.

4, roller shutter arrangement of clutch according to claim 2 is characterized in that: described clutch bearing (6) is provided with handle, and the handle root is established the hole, and lock stay cord and release stay cord are bundled in the hole.

5, roller shutter arrangement of clutch according to claim 2 is characterized in that: described flexible member (7) is a spring.